CN202986856U - Hybrid power system of fuel battery forklift truck - Google Patents
Hybrid power system of fuel battery forklift truck Download PDFInfo
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- CN202986856U CN202986856U CN2012206150121U CN201220615012U CN202986856U CN 202986856 U CN202986856 U CN 202986856U CN 2012206150121 U CN2012206150121 U CN 2012206150121U CN 201220615012 U CN201220615012 U CN 201220615012U CN 202986856 U CN202986856 U CN 202986856U
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- storage battery
- fuel cell
- forklift truck
- fuel battery
- hybrid power
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- 238000000034 method Methods 0.000 abstract description 11
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- 238000002485 combustion reaction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Electric Propulsion And Braking For Vehicles (AREA)
- Fuel Cell (AREA)
Abstract
The utility model provides a hybrid power system of a fuel battery forklift truck. The hybrid power system of the fuel battery forklift truck comprises a fuel battery system, a direct current (DC)/DC module, a storage battery, a motor controller and a motor, and is characterized in that a charger is connected between the fuel battery system and the storage battery, a diode and a resistor R which are connected in parallel are connected between the storage battery and the motor controller, and the anode and the cathode of the diode are respectively connected with an anode terminal of the storage battery and an output end anode of the DC/DC module. According to the hybrid power system of the fuel battery forklift truck, a fuel battery and the storage battery supplied power to the forklift truck, the power requirements of normal driving, starting, acceleration and climbing of the forklift truck are met, and energy can be recovered in the process of electric braking to supply power to the storage battery. Compared with the prior art, the hybrid power system of the fuel battery forklift truck has the advantages of being high in efficiency, good in safety, simple in control method, and low in cost.
Description
Technical field
The utility model relates to electricity-electric hybrid vehicle power system, especially a kind of hybrid power system of structure for fuel cell forklift.
Background technology
Fuel cell powered vehicle is a kind of new-energy automobile, and due to characteristics such as it is efficient, environmental protection, world-renowned car manufacturer is researched and developed energetically, and puts on market.China is like a raging fire to the research and development of fuel cell powered vehicle, and in 2008 Olympic Games and the 2010 World Fair, the fuel cell powered vehicle of succeeding in developing also exposes one after another.But domestic research and development to structure for fuel cell forklift but seldom.
Along with the develop rapidly of domestic logistics industry, the demand of the main transportation means of this logistics of fork truck increases sharply, and global fork truck volume of production and marketing reached more than 270 ten thousand in 2011, and the volume of production and marketing of China reaches 300,000, accounts for 11%.Domestic market is take internal combustion engine fork lift as main, and internal combustion engine fork lift is take diesel oil, gasoline etc. as fuel, and inefficiency has produced serious pollution to environment simultaneously, and particularly the application in indoor storage, tobacco, food service industry more and more is restricted.Constantly perfect along with the national environmental protection policy, internal combustion engine fork lift will be eliminated, and becomes the inexorable trend of fork truck development with the electri forklift of the drivings such as storage battery, fuel cell.At present in China, electri forklift sales volume proportion is 20% left and right, and the foreign market is European and American developed countries particularly, owing to affected by environmental regulation, the output of electri forklift has accounted for more than 40% of fork truck total make, and Japanese electri forklift output has also surpassed 1/3 of fork truck total amount.
Battery electric forklift truck generally uses plumbic acid, Ni-MH battery, and its stream time is short, and charging duration is long, and battery is bulky, is restricted when small space uses.
The same with fuel cell powered vehicle, structure for fuel cell forklift uses hydrogen to be fuel, and efficient is more than 3 times of internal combustion engine fork lift, and water is its unique product, environmental friendliness, and noiselessness pollutes; Also having overcome storage battery, to drive the fork truck stream time short, and charging duration is long, bulky, in the small space shortcoming such as can't work.The power of fork truck is generally little a lot of than automobile simultaneously, so its power requirement to cell of fuel cell is just little a lot, thereby cost also has significantly reduction.External a plurality of large enterprise has begun to produce structure for fuel cell forklift and has been each large supermarket, transportation, removal company's service.At present the core technology of structure for fuel cell forklift is always by external grasp, the domestic tachnical storage that does not also have a fork truck enterprise that this aspect is arranged.
Because fuel cell pile is expensive, and the output performance of fuel cell is along with the variation fluctuation of load is large, have a strong impact on efficient and the life-span of battery, so generally adopt fuel cell to mix with storage battery, i.e. electricity-electric mixed mode, can guarantee the fuel cell efficiency operation like this, make up the shortcomings such as the slow and output performance of fuel cell dynamic response is poor.
The common hybrid power system that is formed by fuel cell and storage battery, as shown in Figure 1.Fuel cell is connected with DC/DC, and DC/DC provides energy for load; Storage battery directly is connected with the driving load, discharging and recharging by battery manager of storage battery controlled, the state-of-charge of battery manager Real-Time Monitoring storage battery, and control it and discharge and recharge behavior, the method of the state-of-charge of monitoring storage battery is all estimation algorithm at present, poor accuracy, and in this system, the control data volume of storage battery is large, method is complicated, and cost is corresponding increase also.
Existing structure for fuel cell forklift hybrid power system cost is high, the internal system waste of power is large, system integration technology is complicated restricts its development always.Watt loss as the DC/DC module accounts for 10%～15% of system's gross horsepower, has a strong impact on efficient and the cost of system; Need to monitor at any time the state-of-charge (State of charge, SOC) of storage battery, the monitoring modular control method is complicated, has further increased the integrated difficulty of system.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of hybrid power system that can simplify control method, raising system effectiveness, reduce the structure for fuel cell forklift of operating cost is provided.
The technical solution of the utility model is: the hybrid power system of structure for fuel cell forklift, comprise fuel cell system, DC/DC module, storage battery, electric machine controller and motor, improvements are that described DC/DC module is unidirectional, access charger between fuel cell system and storage battery, access power diode and resistance R between storage battery and electric machine controller, power diode and resistance R are in parallel, the positive pole of described power diode is connected with the accumulator positive gate terminal, and the negative pole of power diode is connected with the output head anode of DC/DC module.
The conducting resistance of described power diode is 0.1～0.9 Ω; The resistance of described resistance R is 10～99 Ω.
The utility model is take fuel cell as major impetus, and storage battery is auxiliary power.Rational deployment by to fuel cell system, storage battery and DC/DC module etc. realizes discharging and recharging of storage battery with charger, diode and ohmage, reduces the internal system waste of power, reduces system cost; By controlling the charger replacement to the monitoring of storage battery charge state, simplify system control method and integrated complexity.
In the hybrid power system of described structure for fuel cell forklift, fuel cell is by DC/DC module step-down rear drive machine operation, and direct and charger is connected to battery charge simultaneously; During the power that can provide higher than fuel cell when the motor power demand, storage battery provides a part of power by diode discharge.When the fork truck electric braking, motor reversal, to battery charge, recuperated energy is guaranteed the safety of storage battery by resistance R; If the fork truck that uses is mechanical braking, resistance R is inoperative, also can off resistance R, and mechanical braking and electric braking fork truck system can share, and switch simple.
The hybrid power system of described structure for fuel cell forklift does not need storage battery charge state is monitored, and only needs to control charger and can complete management of battery, has guaranteed the safety of storage battery, has simplified the control method of system.By using charger, power diode and resistance R, avoid using two-way DC/DC module, so not only reduced cost, more improved system effectiveness.
Description of drawings
Fig. 1 is the block diagram of common fuel cell hybrid system.
Fig. 2 is the block diagram of the utility model fuel cell hybrid system.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fuel cell hybrid of the present utility model system as shown in Figure 2, the fuel cell system mouth is connected with the DC/DC module input, DC/DC module mouth is connected with electric machine controller, and the DC/DC module can only unidirectionally be exported, and its horsepower output is 1kw～200kw.Access charger between fuel cell system and storage battery, access power diode and resistance R between storage battery and electric machine controller, power diode and resistance R are in parallel, the positive pole of described power diode is connected with the accumulator positive gate terminal, and the negative pole of power diode is connected with the output head anode of DC/DC module.Output after the fuel cell system output voltage transforms through unidirectional DC/DC module provides power for fork truck travels usually, is directly that storage battery carries out little electric current floating charge by low power charger simultaneously, makes storage battery remain at full state.At this moment, the voltage of storage battery and DC/DC module is close, and almost no current is charged a battery by resistance R by the DC/DC module.
When fork truck starts, accelerates or climbs, demand power sharply increases, this moment, storage battery began discharge by diode, and fuel cell power in addition is provided, and in the utility model, diode is unilateral diode, forward conduction voltage drop is 0.2～0.4V, the conducting resistance scope is 0.1～0.9 Ω, and the resistance R Standard resistance range is 10～99 Ω, because the forward conduction resistance ratio resistance R of diode is little a lot, therefore mainly by diode discharge, the electric current on resistance R is very little almost nil for storage battery.
When car retardation or braking, motor reversal, diode are in reverse off-state, and the feedback braking electric current charges to storage battery by small resistor R, recuperated energy, and this moment, the DC/DC module also was in off-state.
Only need to control the parts such as fuel battery part, charger, DC/DC module and electric machine controller in the native system control method, do not need to monitor the state-of-charge (SOC) of storage battery, saved use storage battery SOC detection module and complicated control method, cheap, control simple.
Fuel cell is directly battery charge by charger, does not need the module by DC/DC, has reduced watt loss.Storage battery discharges by power diode simultaneously, reclaims vehicle braking energy by resistance R, need not to use two-way DC/DC module to complete and discharges and recharges, and consumption of power is little, need not simultaneously the control of battery management unit, has simplified control method.The simple small power electric sub-element of this system's utilization has been completed the control that discharges and recharges to storage battery, greatly reduces system cost, has improved simultaneously capacity usage ratio.
If vehicle is mechanical braking, the energy when namely motor can not reverse realization braking or deceleration reclaims, and resistance R is inoperative, maybe can disconnect.Native system is realized sharing of electric braking and mechanical braking vehicle, and economical and practical, simple to operate.
Claims (3)
1. the hybrid power system of a structure for fuel cell forklift, comprise fuel cell system, DC/DC module, storage battery, electric machine controller and motor, it is characterized in that described DC/DC module is unidirectional, access charger between fuel cell system and storage battery, access power diode and resistance R between storage battery and electric machine controller, power diode and resistance R are in parallel, the positive pole of described power diode is connected with the accumulator positive gate terminal, and the negative pole of power diode is connected with the output head anode of DC/DC module.
2. by the hybrid power system of structure for fuel cell forklift claimed in claim 1, the conducting resistance that it is characterized in that described power diode is 0.1～0.9 Ω.
3. by the hybrid power system of structure for fuel cell forklift claimed in claim 1, the resistance that it is characterized in that described resistance R is 10～99 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206150121U CN202986856U (en) | 2012-11-20 | 2012-11-20 | Hybrid power system of fuel battery forklift truck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206150121U CN202986856U (en) | 2012-11-20 | 2012-11-20 | Hybrid power system of fuel battery forklift truck |
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| CN202986856U true CN202986856U (en) | 2013-06-12 |
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| CN2012206150121U Expired - Fee Related CN202986856U (en) | 2012-11-20 | 2012-11-20 | Hybrid power system of fuel battery forklift truck |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951004A (en) * | 2012-11-20 | 2013-03-06 | 北京慧峰聚能科技有限公司 | Hybrid power system of fuel cell forklift |
| CN105502230A (en) * | 2016-01-21 | 2016-04-20 | 安徽农业大学 | Hybrid power forklift transmission system |
| CN106064560A (en) * | 2015-04-20 | 2016-11-02 | 高雄应用科技大学 | Fuel Cell Hybrid Power System And Control Method Thereof |
| CN106515497A (en) * | 2016-12-05 | 2017-03-22 | 青岛理工大学 | Hybrid power system of fuel cell forklift and control method thereof |
| CN111044915A (en) * | 2019-06-26 | 2020-04-21 | 荷贝克电源系统（溧阳）有限公司 | Storage battery capacity control system of rail transit vehicle-mounted power system and detection method thereof |
-
2012
- 2012-11-20 CN CN2012206150121U patent/CN202986856U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951004A (en) * | 2012-11-20 | 2013-03-06 | 北京慧峰聚能科技有限公司 | Hybrid power system of fuel cell forklift |
| CN106064560A (en) * | 2015-04-20 | 2016-11-02 | 高雄应用科技大学 | Fuel Cell Hybrid Power System And Control Method Thereof |
| CN105502230A (en) * | 2016-01-21 | 2016-04-20 | 安徽农业大学 | Hybrid power forklift transmission system |
| CN105502230B (en) * | 2016-01-21 | 2017-10-27 | 安徽农业大学 | A kind of hybrid electric forklift transmission system |
| CN106515497A (en) * | 2016-12-05 | 2017-03-22 | 青岛理工大学 | Hybrid power system of fuel cell forklift and control method thereof |
| CN111044915A (en) * | 2019-06-26 | 2020-04-21 | 荷贝克电源系统（溧阳）有限公司 | Storage battery capacity control system of rail transit vehicle-mounted power system and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20141120 |
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| EXPY | Termination of patent right or utility model |